Core-drying means



' @JZ/@Saggi Mb. 2U, 1923.

J. c. DAVIS com?) DRYING MEANS Filpd Oct. l0, 19l9 JO-A I .ranas c.4 navrs,

- llOUNIDItIES, OFUIIICAG-U, ILLINOIS Milli,

F HIIiTDALE, IIiIJINUIS, ASSIGNOR T0 AMERIGAN STEEL A CORPORATION OF NEW JERSEY.

GORE-DIVYIIKTG MEANS.

v i Application filed Dctber 10, 1919. Serial No. $229,776.`

To all fin/tom may concern Be it known `that Ldairns C. Davis, a

y cation.

citizen of the United States, residing at ,y Hinsdale, in the county or' Du Page and State of Illinois, have invented certain new and useful Improvements in CoreDrying Means, oif ywhich the 'following is a specii- "This invention `relates to ,core drying means.

y, 1l At the present time, as `is Well 1known in the art,` coresy are dried in relatively `large `stationary ovensLf'The `cores may be placed fonpoi'tahle .racks Whichmay be moved into and out ot the stationary ovens. lllhilc such a core drying arrangementhas itsmerits, I

fiind .that I can greatly facilitate and reduce ""thecst of drying cores by a simple and novel means.

Anotherobject is toiprovide a simple and novel self-contained portable oven bymeans 1 of which core drying may be facilitated.

`Another object is to provide a core dry# "ing arrangementadapted to meet the vari- `ous requirements for successful commercial i' operation. y MIhesefand otherobjects are accomplished 30` I1`igure2 is a detail sectional vienT showy ing `the means fior sealing the sides of the ovenvvith respect tothe Vpartitions therein toplreyent leakageoi-hotgases;

i0k i "Figure 3 isa'plan view, somewhat diagrammat1c, ofa battery of stalls in which y therearelocateda plurality of my `core drying oyens` connected to a hot` gas supply yfsource;"` ,y 1. i l i y y "Figure 4f is a similar plan view, some` yfjvgghat diagrammatic, showing the arrangethe Ovens; and

i "mentwhereby the gasesare exhausted trom.

Willbe apparent the following de- "tscription and the drawings nand lwill be particularly pointed out in thcfappended claims. llteterringftirst to Figure ot the drama` y ctoii` my linvention is to mini- .y mize the cost `of drymgicores.

a being indicated bythe arrows.`

that cores may be placed in and Withdrawn lrom`-the oven with comparative ease. As

4 here shown, the portable oven is mounted upon a truclr 13 having Wheels 14 :tor cooperating with tracks 15. Partitions 16, 1'? and 18 are placed Within the `oven and l spaced preferably from the end Walls 4in an alternate manner so that liotgases which` are admitted through an opening 19 in the `lower compartment 20 are forced to take a definite path,` ,Whichin this particularmstance is circuitous, the gasjiinally being y exhausted through an` opening 21 in the top Vof the oven.

It will be noted that the partitions 16 and 18 are arranged in intimatecontact with one end Wall 10, and the other partition 17 is arranged in intimate contact With the other end wall 10, and partitions 16 and 18 are spaced from oneof the end Wallswhile the other partition 17 is spaced from thel other end Wall, the path of movementot' the` gases It Fill be understood that the cores tobe dried are placed upon the floor 12andupon the partitions 16,17` andlS.A the hot gases sweep through the circuitous route, all parts of the cores are treated torvdrying the latter in the most effective manner. The Walls of the `oven preferably are provided with insulation 22 for retaining the heat.v

y It Will'be noted that as a result of the z arrangement ofthe partitions.y `tour vertically arranged compartments are formed,

compartmentf20 heretofore mentioned and compartments 23, 24; and 25. u Compartment 20 is thelargestcompartment and compart ment 25 thesmallest, thesizes of these compartments ranging 'from `the largest to the smallest as shown. In this connectionit Willloe noted `that the hot gases enter the y y a. large .compartment 20 `and as these gases A"Figure 5l isa detail sectional view show? `ing the operation of the hot gas valve` The v`a`rious`novel` features` of my inven gradually give up ftheir heat to the `cores y which `are being dried, the gasesbecome reduced in volume, and to have the same velocity of theheating, gases throughoutall of the compartments, the compartments above thelargest 20 are gradually-decreased 'mie 1in turn connected to a generifilexhanst pipe To prevent leakage of the gases at the removable side walls, the latter. which are in the form of removable doors 26 prcter` ablyhinged at their upper ends 27, are provided on the inner side adjacent the various partitions'with channels 23, by means of which sand 29 is carried. The sand is piled upon the channels 23 while the ldoors 26 are held partly openv ln closing the doors 26, the same are swungl inwardlywhereupon the side edges ot the partiti/.f is project into t-hesand 29. forming a perfect seal.

By referring to Figin'c 3 or' the draw ings, it. will be noted that l have provided a plurality of stalls 30 formed preferably in a brick structure 3l tor the reception ot the portable ovens, said wall'3l being provided with a plurality'or hot gas passageways 32 connected with ay furnace or source 33 of hot gases'or hot products of combustion. These passageways 32 lcommunicate with the openings 19 in one `rnd wall olf the associated portable ovens` .whereby the hot gases may be supplied to the later. The open ings 19 in the ovens preteiably rd'cnd substantially the full width ot the oven and maybe of any'desired height.

These p'assageways 32 are controlled by valves 34 so that it one or the stalls 30 is not. occupied by an oven, the valve associated with said stall may be closed to prevent the escape of hot gases while such hot gases are being supplied to ovens located in other stalls. If desired, these valves may be automatically controlled by the oven in backing into place; that is to say, when the oven is moved into a position such that its opening 1 9 registers with the hot gas passageway 32 the valve'B/t may be opened automatically.

For illustrative purposes in Figure 5, 'l have shown associated with the opening 'i9 an arm 35, which projects back into the passageway 32` for engaging and opening vthe valve 34 when the oven' is backed into a .position in which its opening 19 registers with the passageway 32. lt will be underl stood that when the oven is withdrawn and.

accordingly, the arm 35 ywith-drawn,l the valve'34 will flap back into closed position to prevent further passage or hot gas from the source of supply. Each ot the openings :2 1 in the top ofthe ovens, vwhen in operative position, communicates with "a outlet hoorl 36 having connected thereto a pipe 37.

38 from whichV relatively Vcool gases are ezihausted by a fan 39 operated by a motor i-O. The pipes 37 are provided with valves del. wherebysuction may be cut off at one or the stalls `when the same is not occupied by an oven. The cost of such a core drying arrangement is relatively inexpensive, for instead oi: having a large brick oven and using llic ordinary core dryingframe on a car in the oven. this portable car is aself-contained torce the gases into and between the cores stacked on core shelves, l have provided au arrangement whereby the hot gases are torced to circulate in a dcl'initely delined path, whereby the gases pass into intimate contact with the cores Vtor drying thc latter most effectively.

lt will be understwd. olt course7 that instead ot' providing the portable ovens with trucks, Ithey 'may be shifted from one placc to another by cranes.

The ovens in being moved away trom thc stalls 30 pass onto a transfer table 42, by means or which the oven may be moved into operative position with any suitable track l-I i'or movement to any desired part of the plant. Also by means ot this transfer table. the ovens may be loaded at any desirable spot preparatory to being transferred to the stalls 30.

t is my intention to cover all inodilications or the invention Afalling within the spirit and scope o'lt the iollowing claims.

I claim:

i. A portable oven coniprising a walled enclosure, partitions therein forming com municating compartments in which the volunie of the compartments decreases so that a Huid drying medium passing through said oven will be accommodated in accordance to its reduction in volume as a result ot the lowering or its temperature.

2. A portable voven comprising a walled enclosure, partitions mounted in said enclosure arranged with respect to the walls lor causing a fluid drying medium passing through said oven to take a circuitous route. the sides oli said oven being removable and having means tor cri-operating with the partitions to form a seal against the leakage of gases.

3. A portable oven comprising a walled enclosure., partitions mounted in said enclosure arranged with respect to the walls tor causing a fluid drying medium passing through said oven to take a (.jircuitous route. the sides or' said oven being removable and having` sand containing portions lor coop erating with the partitions to form a seal against the leakage of gases.

4. ln combinatioin'a supply stall having a passageway.y a portable oven movable into and out or said stall said oven being an enclosed chamber having an opening which may register with the stall passa geway, and

means for supplying hot gases to said pasllll HPU

llil

lil() .sind oven.

hir-isere sageway for causing a heatihg mediuu'i to pass through the oven.

lo combination, a supply stall having a passageway, a portable oven movable into and out of said stall and having an opening which i'uay register With the stall passagen way, 'means for supplying het gases tosaid passageway for causing a heating medium to pass through the oven, and iheails for causing spent gases to be `exhausted from 6. ln combination, a supply stall having a passageiwiy, a 'valve associated therewith, a portable oven movable into and out of said stall and having an opening for registering With said passageway, said valve being controlled whereby a supply of hot gases may pass through. said passagewayinto the overl when the oven is in the proper position for receiving hot` gases. y y

7. 'la combination, a supply stall having a passageway, a `valve associated therewith, a portable oven `movable into and out of said stall and having an opening for registering with said passageway, said valve being controliedwherehy a supply of hot gasesmay pass through said passageway into the overl. when the oven is in the proper position for receiving hot gases,` and valve controlling means for controllingthe exhaust of spent gases from said oven.

Signed at Chicago,

Illinois, this 6th day October, 1919,

Jai/raso. Davis. 

